I just realized that I had been developing too long when I closed out a sentence in email with a semicolon instead of a period and it took me a second to realize it didn’t belong there. Soon after, I realized that it was 2:30; I was expecting it to be time for lunch (11 A.M.). That’s flow, baby.
NOTE: for all you non-programmers out there, in C# (and many other languages), you end every program line with a semicolon.